SystemClockHSEbypass_Config() function

Switch the PLL source from HSI to HSE bypass, and select the PLL as SYSCLK source. The system Clock is configured as follows : System Clock source = PLL (HSE bypass) SYSCLK(Hz) = 180000000 HCLK(Hz) = 180000000 AHB Prescaler = 1 APB1 Prescaler = 4 APB2 Prescaler = 2 HSE Frequency(Hz) = 8000000 PLL_M = 8 PLL_N = 360 PLL_P = 2 PLL_Q = 7 VDD(V) = 3.3 HSE Frequency(Hz) = 8000000 PLL_M = 8 PLL_N = 200 PLL_P = 2 PLL_Q = 7 VDD(V) = 3.3 Flash Latency(WS) = 5